There have been numerous talks that Apple will be implementing fingerprint scanning technology in the up and coming iPhone 5S. However, it looks like the iPhone 5S fingerprint sensor won't remain a rumor anymore as there has been a strong evidence that was discovered in iOS 7 beta 4.

A new folder called “BiometricKitUI” has been leaked by iOS 7 beta 4, which is a strong indication that Apple is indeed preparing a new iPhone with a fingerprint sensor. According to 9to5Mac, this particular bit of info was brought into our attention by a developer named Hamza Sood. If you open the .plist file contained within the BiometricKitUI, you will be able to read the following texts:

Photo of a person holding an iPhone with their left hand while touching the Home button with their thumb_;

A fingerprint that changes colour during the setup process._

iPhoto of a person holding an iPhone with their right hand while touching the Home button with their thumb_Recognition is

According to Sood, the strings above are what an iPhone with VoiceOver on would read to a user. According to a particular source that's familiar with the next-gen iPhone development, the new interface for fingerprint scanning is already complete. The person also adds that the fingerprint sensor will be used mainly for unlocking the device and it's still unclear if it's going to be used for a payment system as it was previously rumored.

It is worth noting that this is the very first real evidence that Apple is indeed working to implement biometric security. So what do you think of this new security feature? Is fingerprint scanning a killer feature that would make you want the iPhone 5S?